Home/Radon Testing/Prince William County/Gainesville, VA

Radon testing

Radon Testing in Gainesville, VA

A continuous monitor on the lowest level that could be used regularly, read every hour for at least 48 hours. The written result comes the day we collect it.

4.9 rating, over 4,000 reviews NRSB-certified technicians Serving Prince William County

Schedule a radon test Call (703) 450-6398

What our customers say

From our customer reviews.

They conducted the test right away and kept me informed every step of the way.

They arrived the day after I called, on time, set up the Radon test and left within 5 minutes.

Everything was handled so professionally, quickly and so easy to have our house tested for radon.

They found elevated radon in the home and numerous issues on the home inspection report which were remedied before I moved in.

Great service, very thorough inspection and highlighted items in a very approachable and organized manner.

How much does radon testing cost in Gainesville?

A radon test in Gainesville is $185, or $175 when it is added to a home inspection. That is the whole price: both visits, the monitor for the full 48 hours, and the written report with every hourly reading in it. The quoted service is for one Gainesville residence. A second unit, clubhouse or separately occupied suite needs its own scope discussion before the appointment is confirmed.

Day 1

Drop-off

We place the monitor

A technician places it on the lowest level that could be used regularly, following EPA placement limits and the intended use of the space, inside a two-hour arrival window. With a home inspection, placement happens during the inspection visit.

48 hours

The house stays closed

The monitor does the work

For a short-term real-estate test, EPA guidance calls for closed-building conditions for at least 12 hours before the test and throughout the measurement. Windows stay closed, exterior doors open only for normal entry and exit, and the monitor logs hourly readings that help document the test conditions during the minimum 48-hour measurement.

Day 3

Pick-up and report

We collect it, read it, and write it up

A technician picks the monitor up in another two-hour window and pulls the full record on the spot. The written report reaches you the same day.

NRSB-certified technicians. Our own team, certified by the National Radon Safety Board, not a subcontractor.

EPA testing guidance. Placement, closed-house conditions and the 48-hour minimum follow it, and your average is read against the EPA action level of 4.0 pCi/L.

Continuous monitors. Airthings Corentium Pro instruments, logging every hour for the whole test.

Appointment times are requests until our team confirms them. What the number means, how to prepare the property and the eight questions everyone asks are on the radon testing page; this page is about Gainesville.

Gainesville radon testing in Prince William County

Gainesville is in Prince William County, which the EPA lists as radon Zone 2. The countywide potential category does not measure a Gainesville townhouse or detached home. Test the actual residence and identify its lowest level that could be used regularly, including a room planned as an office, bedroom or recreation space after the sale.

A Prince William County mobility study notes townhouse development in Gainesville East near Limestone Drive. That planning observation describes an area, not every property or its indoor radon. Heritage Hunt, Lake Manassas, Virginia Oaks and Piedmont addresses can involve different entry arrangements. Provide a gate or visitor procedure, exact unit if applicable, and an authorized contact for both visits. Choose dates without painting, flooring or moving work in the test area.

Local background: Prince William County Gainesville mobility study, Virginia Department of Health radon map guidance, EPA radon zones and property-testing guidance.

Aerial view of neighborhoods in the Gainesville and Haymarket area of Virginia

Heritage Hunt contact

Name the person who knows the home's lower-room use and can admit the technician twice.

Lake Manassas and Virginia Oaks

Keep repair crews and deliveries out of the measurement room during the test interval.

Piedmont and Gainesville East

Send gate instructions and confirm the booked townhouse or house, not just the neighborhood.

Where we test in Gainesville, and what to tell us

Heritage Hunt
For Heritage Hunt, explain the lowest room that could be used regularly in this particular residence.
Lake Manassas, Virginia Oaks
At Lake Manassas or Virginia Oaks, reserve a stable period for placement, measurement and pickup.
Piedmont, Broad Run Oaks, Glenkirk Estates
In Piedmont or Gainesville East, provide visitor access and any exact building or unit number.

We only perform testing, not mitigation.

We do not install radon systems, so we have nothing to gain from your number. If the result is at or above the EPA action level of 4.0 pCi/L, you choose who fixes it. Once the system is in, we can test again and tell you what it reads.

Before you book in Virginia

Virginia's residential disclosure statute directs the seller's disclosure statement to say that the owner makes no representation about whether the property is in an EPA Zone 1 or Zone 2 locality. It directs buyers to use due diligence, including reviewing EPA, Virginia Department of Health and NRSB information and ordering a radon inspection before settlement as the contract allows.

Va. Code section 55.1-703. Current as of September 2026. General information, not legal advice.

Radon testing near Gainesville

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Radon testing in Gainesville, answered straight

What lower-level information helps at a Gainesville townhouse?

Describe the lowest room that is used regularly or could reasonably become regular living space, along with any walkout door and separate occupancy. The technician uses that information when selecting the measurement level.

How should a vacant Lake Manassas property be prepared?

Arrange functioning heating or cooling, closed-building conditions and reliable entry for setup and pickup. Give the testing team the name of the person who will verify the property remained secured.

What if contractors enter a Gainesville home during the measurement?

Tell the technician which workers entered, when they were present and whether doors, windows or the device were affected. That record helps determine whether the collected data can be used.

Does the 2021 Gainesville East townhouse reference determine placement?

No. The county report only documents development context along Limestone Drive. Placement depends on the actual booked residence and its lowest level that could be used regularly.

Book a radon test in Gainesville

Book online or call (703) 450-6398.

Schedule a radon test Request a price

NextDay Inspect
46179 Westlake Dr, Ste 200, Sterling, VA 20165
(703) 450-6398

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